Multithreading - Download String From A Remote Server And Then To Show That String In The GUI
Jun 10, 2012
I guess that I'm not the first who ask this, but what is the easiest way to use threads in VB.NET? I mean, I need to download some string from a remote server and then to show that string in the GUI, so I have to use some callback function to call it in the main thread. I found different approaches for this, but all seems very difficult compared to Python where (with GTK) I used something like: gobject.idle_add(callback_function, parameters) and "callback_function" was executed in the main thread. How I do that in VB.NET?
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Dec 3, 2011
I have configured Sql Server Express on a server, Enabling TCP/IP and Named Pipes to accept remote connections. However when i attempt to connect from VB.net on another PC on the same network I get the following Error: Failed to login user "ServerNameUser".
Can anyone offer some server setting and a ADO.NET Connection string. The attached file has the Sql Server Settings.Attached Files sqlRemoteConfig_Current.txt (806 Bytes, 70 views)
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Feb 3, 2012
I built a window's app in VB. The app is made to be used worldwide. The app works fine when it is installed on a computer using the same network than the local machine hosting the sql database. The problem actually, is that, when the app is installed on a computer using a diferent network, the connection fails.
[Code]...
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Jan 21, 2012
For a project I need a small program that can safely receive a string from another web-server.A user browses to a website, let's say for example www.EnterStringHere.com, and fills in a string. (I think PHP is good for this) This string is first being hashed/salted and via a secured method (PHP in combination with cURL) send to my program (therefore this topic) which is being hosted at my home server.Then it gets de-hashed/de-salted to bring back the original string and do something with it.I was thinking of making a VB.NET executable that "listens" at the home servers IP address to receive this string.
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Feb 10, 2010
I planing to develop an application which can connect any remote server and pick the configuration information from server and show it in my desktop.
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Aug 12, 2011
Is there any way to download multiple files at the same time from a remote server? How I am doing it currently is I get a list of files from the target folder on the server then I loop through that list & download each file 1 at a time. For 100 small files it takes about 45 seconds. I'm guessing that the bulk of the time it takes is logging in to the server for each file to download, so 100 files means it has to login, download & logoff 100 times. Is it possible to login just once, download the 100 files then logout?
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Feb 7, 2006
I need to download an .exe from the web/ftp server and execute it. (it's a setup program)The application would use the WebClient (probably) class to downlad the files, and presumably would display progress to the user as it goes.
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Sep 14, 2004
I need to download an .exe from the web/ftp server and execute it. (it's a setup program)The application would use the WebClient (probably) class to downlad the files, and presumably would display progress to the user as it goes.
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Dec 18, 2010
I want to download some imagefile from a multilinetextbox and right now i m using this code
Multiline textbox contains :
[URL]
Code 1 :
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim ary() As String = TextBox2.Text.Split(Environment.NewLine)
[Code]....
because in both cases it will download file one by one and i want to do my job as fast as possible by sharing the multilinetextbox data among set of thread's but how to do i dunno
Like if i multilinetextbox contain 100 image file link and i want to run 3 thread at a time then these 3 thread will share/Access the multilinetextbox data what will be the my final code ?
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Dec 10, 2010
I've been using this simple code to download a URL to a file :-
Code:
Shared Function DownloadFile(ByVal URL As String, ByVal LocalDest As String) As Boolean
Try
Dim wc As New System.Net.WebClient
Dim u As New Uri(URL)
[code]....
Then simply load the file in to a string and find the data that I need.
1. Is there a more efficient way of downloading a web page directly into a string without having to save the file physically to my hard drive?
2. Can I specify a timeout somewhere?
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Aug 8, 2011
I read the following question to download a web page whose contents is coded in UTF-8. The page is then converted into a byte array, while I'm using a String to read contents from the page.
I need to turn UTF-8 into Latin1/ANSI since that's what RichText and MessageBox seem to use (I'm getting funny characters).
Is there a more direct way to donwload a UTF-8 page and convert it into ANSI/Latin1?
Edit: When callig MessageBox, accented characters are not shown as expected:
Content = CStr(e.Result)
'Théâtre, Métro
MessageBox.Show(Content)
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Jun 2, 2011
vb
Public Class download
Public Event AmountDownloadedChanged(ByVal iNewProgress As String, ByVal rowno As Integer)
[Code].....
How I can download Multiple file's using multithreading and
How I will display progress report in Datagridview Column ("Progress")
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Jul 2, 2009
I'm trying to Download a String from a Webpage, but in order to do that, I need to download the whole webpage. I've found it easier to use DownloadString, but I can not figure out how to process each line of the Downloaded String, as it is one whole string.
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Dec 29, 2009
I have a remote text file on http://somewhere... that I need to read into a string variable in vb.net. What is the simplest way to do this?
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Aug 15, 2010
What would be the most quickest way to edit a text file on a remote host?
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Dec 14, 2009
I am using this to download the source code from a web site but it is not downloading all the links:
With Form2.RichTextBox1
Dim instance As New Net.WebClient
Dim aAddress As Uri = Me.WebBrowser1.Url
.Text = instance.DownloadString(aAddress)
End With
If I right click with the mouse on the site and view page source the links are there but for some reason download string is missing them.
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Mar 9, 2012
I was developing a website on development server. I created a user authentication and access rules on my website. So VS created Aspnetdb. I also created a login page using in built login control. I deny all the anonymous users to the page so it will redirect to login page everytime.
Now that I moved aspnetdb and my website to the remote server to the new hosting I bought. I also merged few tables into aspnetdb. But I don't know how to change the connection string for that login control. I didn't write any code myself for that and there is no connection string in the web.config to connect to aspnetdb. For other pages where I created from scratch myself, I changed the connection strings to the aspnetdb and it works fine, but Login control don't.
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Dec 17, 2011
I am Using a Application server for calling Oracle Reports and i have url to call the report when report is called the server convert it into pdf but when report contain large data it got a lot of time to load.I want to do in asp.net that when i call the report url it open the pdf file and copies it into the root of my web folder and next time when i call the url it open the pdf file and on back end loads the I want to call function on hyerplink in new tab.i want to use multithreading to call one file from root directory and other to download on backend
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Jan 18, 2011
Can I do anything more or less with IDictionary? How do these two collections differ?
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Apr 24, 2011
My.Computer.Network.DownloadFile _
("http://example/example.exe", _
"C:example.exe")
I'm using this code to download a file can I add User Agent String so protocol analyzers could have info about this download with a custom string I make.
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Oct 24, 2009
How do i can skip crash if file is not exists which comes if app try download string.
So: http://127.0.0.1/Script/Info/ScriptList.txt
(If ScriptList.txt is not avaible how do i can skip crash and say messagebox: "File not found." instead of crash and apps close)
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Mar 11, 2010
my code is :
[Code]...
The error is Value of type '1-dimensional array of string' cannot be converted to 'String'.
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Nov 18, 2011
I usually download file using following code:My.Computer.Network.DownloadFile("url of the file","filepath to save the file")But recently I encountered a site that only allow file download if you click it from its site and not via direct downloading from vb.net code.How to download file from http server that requires a referral before allowing the download?
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Aug 5, 2009
I have VB 2008 and am trying to find a multithreading example that won't show up as obsolete. (seems like most examples are releavant for vb 2005) I found an example on the back ground worker. Is this true multi threading?I am working on a project that needs to go out and get data often but still allow the user to interact with the menus and graphics.
I'd like to put the data grabbing on a timer on a seperate thread. how to make a timer and related data grabbing a seperate thread so I don't have "starts/stops" in the gui?
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Aug 12, 2009
I have a requirement to move the html text available in a string builder to a word document and open the word document after the data is appended in a VB.NET console application. I am new to console applications and am not sure how this could be done, but I am aware that if I am using a Web Application then I can use the following code:[code]
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Mar 22, 2012
I'm fooling around in my VB class trying to make a small stand-alone web browser.Most of the questions I find involve taking a user-input string and converting it to a URI. My problem is that I want to take the current URI data in my Web Browser object and convert it to a string that I can display in the text box. When I click the link, my navigation bar will display the URL of the page I move to, and it will update as I go to different pages. Now I'm attempting to do this by setting the textbox to the Browser's URL value everytime the browser navigates. But the textbox cannot accept URI objects, only strings.Does anyone know how to convert them or a more efficient manner of doing this update?
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Mar 8, 2009
How do I show a defined string in a msgbox, I have the following example:
MsgBox("Nice try! The correct answer is" input)
I'm getting a "a valid expression continuation expected" error
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Mar 5, 2012
For a To-do list program, I am trying to use something like this to get the textbox (txtlast) to show the string held in the array, but the text box just keeps coming up blank..... why is this?
txtLast.Text = Arrnumbervalue(IntYear, IntMonth, IntDay, IntHour)
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Jul 8, 2010
I have a code where I search a text file for for example: "2320018200000", then it looks it up and finds a line like this[code]...
I want it to put that entire line in a label, but for some reason it skips the "3 1604001Sf" in the start. [code]...
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Dec 13, 2009
I have a windows forms application with a button on it. When I press it it appears me a input box I type RAC and I want that it displays me in a message box (with MsgBox) the reverse of the string in this case: CAR. In the input box I type RAC and want it to display me when I press ok button the reverse of that string CAR. [Code]
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